20577986

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 37895424

約数和(自身を除く): 17317438

約数列:

[1, 2, 11, 13, 22, 26, 31, 62, 121, 143, 211, 242, 286, 341, 403, 422, 682, 806, 1573, 2321, 2743, 3146, 3751, 4433, 4642, 5486, 6541, 7502, 8866, 13082, 25531, 30173, 48763, 51062, 60346, 71951, 85033, 97526, 143902, 170066, 331903, 663806, 791461, 935363, 1582922, 1870726, 10288993, 20577986]

約数ペア:

[(1, 20577986), (2, 10288993), (11, 1870726), (13, 1582922), (22, 935363), (26, 791461), (31, 663806), (62, 331903), (121, 170066), (143, 143902), (211, 97526), (242, 85033), (286, 71951), (341, 60346), (403, 51062), (422, 48763), (682, 30173), (806, 25531), (1573, 13082), (2321, 8866), (2743, 7502), (3146, 6541), (3751, 5486), (4433, 4642)]